hwmon: (max31730) witch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

These newer PM macros allow the compiler to see what code it can remove
if !CONFIG_PM_SLEEP. This allows the removal of __maybe_unused markings
whilst achieving the same result.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220925172759.3573439-11-jic23@kernel.orgSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/max31730.c

@@ -404,28 +404,28 @@ static int max31730_detect(struct i2c_client *client,
 	return 0;
 }
 
-static int __maybe_unused max31730_suspend(struct device *dev)
+static int max31730_suspend(struct device *dev)
 {
 	struct max31730_data *data = dev_get_drvdata(dev);
 
 	return max31730_write_config(data, MAX31730_STOP, 0);
 }
 
-static int __maybe_unused max31730_resume(struct device *dev)
+static int max31730_resume(struct device *dev)
 {
 	struct max31730_data *data = dev_get_drvdata(dev);
 
 	return max31730_write_config(data, 0, MAX31730_STOP);
 }
 
-static SIMPLE_DEV_PM_OPS(max31730_pm_ops, max31730_suspend, max31730_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max31730_pm_ops, max31730_suspend, max31730_resume);
 
 static struct i2c_driver max31730_driver = {
 	.class		= I2C_CLASS_HWMON,
 	.driver = {
 		.name	= "max31730",
 		.of_match_table = of_match_ptr(max31730_of_match),
-		.pm	= &max31730_pm_ops,
+		.pm	= pm_sleep_ptr(&max31730_pm_ops),
 	},
 	.probe_new	= max31730_probe,
 	.id_table	= max31730_ids,